推荐安卓开发神器(里面有各种UI特效和android代码库实例)
在eclipse中编译android project,提示如标题的错误。
其原因有可能是eclipse heap overflow
解决办法:修改eclipse.ini中的Xms和Xmx
-startup plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar --launcher.library plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.1.R36x_v20100810 -product org.eclipse.epp.package.jee.product --launcher.defaultAction openFile --launcher.XXMaxPermSize 256M -showsplash org.eclipse.platform --launcher.XXMaxPermSize 256m --launcher.defaultAction openFile -vmargs -Dosgi.requiredJavaVersion=1.5 <SPAN style="COLOR: #ff0000">-Xms256m -Xmx768m</SPAN> -startup plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar --launcher.library plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.1.R36x_v20100810 -product org.eclipse.epp.package.jee.product --launcher.defaultAction openFile --launcher.XXMaxPermSize 256M -showsplash org.eclipse.platform --launcher.XXMaxPermSize 256m --launcher.defaultAction openFile -vmargs -Dosgi.requiredJavaVersion=1.5 -Xms128m -Xmx512m
注意值不能改太大,不然在launch eclipse的时候会出现“Failed to create Java Virtual Machine”
And here are some tips from websites abroad:
As Android developer, I have met a strange problem when I want use a third party jar, it remained me that:
Dex Loader] Unable to execute dex: null
Conversion to Dalvik format failed: Unable to execute dex: null
out of memory error…An internal error occurred during: “Build Project”.
Java heap space
This is the DEX Error,I find the solutions by Google, one way is to modify the eclipse.ini, you can increase the memory allocated in eclipse.ini to this: -Xms128m -Xmx512m or something higher, but this didn’t work for me. After modify the eclipse.ini, I cannot start the eclipse. By StackOverflow, I find a solution:
eclipse.ini file must have -vm on first line and path on second line. don’t try to put everything into one line!
-vm
C:\Program Files\Java\jdk1.6.0_07\bin\javaw.exe
After add the -vm and the path in my eclipse.ini, I can start my Eclipse and the problem has been resolved.
Another way to solve the ” Conversion to Dalvik format failed: Unable to execute dex: null” problem is using the user library, the concrete steps are as follows :
Right-click the project in Eclipse and select “Build Path -> Add Libraries…”.
Select User Library from the list and click Next.
Click the “User Libraries…” button.
Click “New…” in the User Libraries dialog.
Give the user library a name and select the System library checkbox and click OK.
Highlight the newly added user library in the list and click the “Add JARs…” button and add the desired jar files.
Click OK on the User Libraries dialog.
Make sure the new user library is checked in the Add Library dialog and …
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